Delphi FP10385 Fuel Injection Pressure Regulator

Fuel Pressure Control for OE-Style Repair

The Delphi FP10385 fuel injection pressure regulator is built for returnless fuel systems that require stable 38 psi system pressure. With a metal body, push-in inlet, clamp mounting, and no gauge port, it matches the needs of select Jaguar and Saab applications where consistent fuel delivery is critical.

Use this Delphi fuel injection pressure regulator when servicing a returnless fuel system on vehicles such as the Jaguar XJ8, XK8, XKR, XJR, Vanden Plas, and Saab 9-3. Delphi draws on OE engineering experience to produce aftermarket parts that reflect original equipment design knowledge.

Key Features

• Part number: FP10385
• Fuel injection pressure regulator for returnless systems
• System pressure: 38 psi
• Metal construction for fuel system durability
• Push-in inlet with clamp mounting
• 1 inlet and 1 outlet
• No gauge port
• Non-adjustable design

Detailed Product Overview

The Delphi FP10385 is a fuel injection pressure regulator engineered for applications that use a returnless fuel delivery layout. Its 38 psi system pressure specification, metal housing, and single inlet/single outlet configuration support precise fuel pressure control in the fuel injection system. The inlet measures 1.06 in. / 27.0 mm and uses a push-in connection, while the outlet is configured for returnless routing.

This part cross-references Gates (e.g., 24164, 24180) for the same application. It is a direct-fit style replacement for select Jaguar and Saab vehicles, including 1997-2002 Jaguar XK8, 2000-2002 Jaguar XKR, 1998-1999 Jaguar XJR, 1998-2003 Jaguar XJ8, 1998-2003 Jaguar Vanden Plas, and 2003-2006 Saab 9-3.

Common Issues This Part Can Address

• Fuel pressure that is outside the specified 38 psi range
• Hard starting caused by unstable fuel delivery
• Rough idle related to inconsistent injector pressure
• Fuel system performance problems in returnless configurations
• Pressure regulator failure in select Jaguar and Saab fuel injection systems

Installation Notes and Tips

Verify the inlet diameter, push-in connection style, clamp mounting, and returnless outlet configuration before installation. Confirm the vehicle’s fuel system specification matches 38 psi and compare the original regulator to the FP10385 for fitment details. For best results, inspect surrounding fuel lines and seals during service and follow the vehicle manufacturer’s fuel system procedures.

Quality Assurance

Delphi builds aftermarket parts using OE experience and engineering knowledge developed through long-term supplier relationships with major automakers. The FP10385 reflects that OE heritage in a fuel pressure regulator designed for the specified applications.